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Ultrafast and ultraslow proton transfer of pyranine in an ionic liquid microemulsion
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10.1063/1.3428669
/content/aip/journal/jcp/132/19/10.1063/1.3428669
http://aip.metastore.ingenta.com/content/aip/journal/jcp/132/19/10.1063/1.3428669

Figures

Image of Scheme 1.
Scheme 1.

Structure of (a) HPTS, (b) [pmim] /TX-100/benzene microemulsion (c) TX-100, and (d) [pmim] .

Image of Scheme 2.
Scheme 2.

Kinetic scheme depicting the proton transfer process in pyranine.

Image of FIG. 1.
FIG. 1.

Steady state emission spectra of HPTS in (i) water and (ii) neat [pmim] .

Image of FIG. 2.
FIG. 2.

Steady state emission spectra of HPTS in RTIL microemulsion. The intensity ratio of vs w plot is shown in the inset.

Image of FIG. 3.
FIG. 3.

Excitation spectra of HPTS in RTIL microemulsion with monitored at (i) and (ii) .

Image of FIG. 4.
FIG. 4.

Femtosecond transient of HPTS in different systems at [(a), (c), (e), and (g)] and 540 nm [(b), (d), (f), and (h)].

Image of FIG. 5.
FIG. 5.

Picosecond transients of anionic emission in RTIL microemulsion in absence and presence of water .

Image of FIG. 6.
FIG. 6.

Femtosecond transient of HPTS in (a) RTIL microemulsion with and (b) TX-100/benzene reverse micelle with at .

Image of FIG. 7.
FIG. 7.

Fluorescence anisotropy decay of HPTS in (i) water, (ii) RTIL microemulsion with water (iii) RTIL microemulsion in absence of water and (iv) water/TX-100/benzene reverse micelle at . Fitted curves of the decay are shown in the inset.

Tables

Generic image for table
Table I.

Decay parameters of the ROH emission (at 430 nm) and the emission (at 540 nm) of HPTS in RTIL microemulsion in the presence of .

Generic image for table
Table II.

Decay parameters of the ROH emission (at 430 nm) and the emission (at 540 nm) of HPTS in RTIL microemulsion in the presence of .

Generic image for table
Table III.

Decay parameters of the ROH emission (at 430 nm) and the emission (at 540 nm) of HPTS in TX-100/benzene reverse micelle in the presence of and (, ).

Generic image for table
Table IV.

Time constants of deprotonation of the protonated species (ROH), recombination , and dissociation of geminate ion pair of HPTS.

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/content/aip/journal/jcp/132/19/10.1063/1.3428669
2010-05-21
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrafast and ultraslow proton transfer of pyranine in an ionic liquid microemulsion
http://aip.metastore.ingenta.com/content/aip/journal/jcp/132/19/10.1063/1.3428669
10.1063/1.3428669
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